Season 11 opens in Cambridge, Mass., where the conversion of an 1887 Victorian-era two-family house into a single-family home commences. A look at the yard turns up a few surprises; an energy audit reveals the need for efficiency upgrades; and a deconstruction expert is brought in to help with the removal of old and unneeded house parts. Also: how to customize stock shelving; and install a new washing-machine valve.